Artie and Beth are playing a game. Beth moves one place to the right on a number line each second. Artie moves 2 places each second. Beth starts 1 place ahead of Artie. When Artie catches up to Beth the first time, he must turn around and go back to where he started and then catch up to Beth a second time. Starting from the zero on the number line, how many seconds will it take for Artie to catch up to Beth for the second time?